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Cheap flights from Seattle to Ireland from €145

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 24/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Seattle to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
13:30 - 14:40
SEA
-
ORK
17h 10m
1 stop
KLM Logo
10:50 - 16:27
ORK
-
SEA
13h 37m
1 stop
€628KLM
Mon, 3 Aug - Wed, 19 Aug
Icelandair Logo
15:40 - 13:15
SEA
-
DUB
13h 35m
1 stop
Icelandair Logo
14:15 - 17:55
DUB
-
SEA
11h 40m
1 stop
€631Icelandair
Mon, 3 Aug - Sat, 22 Aug
Icelandair Logo
23:25 - 11:05
SEA
-
DUB
27h 40m
1 stop
Icelandair Logo
14:15 - 20:40
DUB
-
SEA
14h 25m
1 stop
€632Icelandair
Fri, 28 Aug - Tue, 29 Sep
Lufthansa Logo
10:40 - 07:45
SEA
-
DUB
13h 05m
1 stop
Lufthansa Logo
05:55 - 22:47
DUB
-
SEA
24h 52m
2 stops
€633Lufthansa
Sat, 5 Sep - Sun, 13 Sep
Multiple Airlines Logo
15:40 - 19:50
SEA
-
DUB
20h 10m
2 stops
Multiple Airlines Logo
06:30 - 20:40
DUB
-
SEA
22h 10m
2 stops
€636Multiple Airlines
Sat, 29 Aug - Tue, 15 Sep
Lufthansa Logo
19:20 - 07:45
SEA
-
DUB
52h 25m
2 stops
Lufthansa Logo
09:50 - 22:47
DUB
-
SEA
20h 57m
2 stops
€637Lufthansa
Sat, 5 Sep - Tue, 15 Sep
United Airlines Logo
07:00 - 07:20
SEA
-
DUB
16h 20m
2 stops
United Airlines Logo
09:20 - 23:36
DUB
-
SEA
22h 16m
2 stops
€638United Airlines
Tue, 1 Sep - Tue, 8 Sep
United Airlines Logo
08:40 - 11:10
SEA
-
DUB
18h 30m
2 stops
United Airlines Logo
09:20 - 19:14
DUB
-
SEA
17h 54m
2 stops
€639United Airlines
Fri, 11 Sep - Sat, 19 Sep
Delta Logo
07:15 - 10:20
SEA
-
ORK
19h 05m
2 stops
Delta Logo
10:50 - 16:35
ORK
-
SEA
13h 45m
1 stop
€716Delta
Fri, 11 Sep - Mon, 21 Sep
Delta Logo
07:15 - 10:20
SEA
-
ORK
19h 05m
2 stops
Delta Logo
10:50 - 16:35
ORK
-
SEA
13h 45m
1 stop
€717Delta
Fri, 11 Sep - Mon, 21 Sep

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Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
3 Aug
SEA15:40Seattle/Tacoma Intl
13h 35m
1 stop
DUB13:15Dublin
22 Aug
DUB14:15Dublin
11h 40m
1 stop
SEA17:55Seattle/Tacoma Intl
€631
Icelandair
28 Aug
SEA23:25Seattle/Tacoma Intl
27h 40m
1 stop
DUB11:05Dublin
29 Sept
DUB14:15Dublin
14h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€632
Icelandair
8 Aug
SEA23:25Seattle/Tacoma Intl
29h 50m
1 stop
DUB13:15Dublin
19 Aug
DUB12:15Dublin
31h 30m
1 stop
SEA11:45Seattle/Tacoma Intl
€634

Lufthansa flights from Seattle to Ireland

Our best Lufthansa deals on Seattle to Ireland flight tickets
Lufthansa
5 Sept
SEA10:40Seattle/Tacoma Intl
13h 05m
1 stop
DUB07:45Dublin
13 Sept
DUB05:55Dublin
24h 52m
2 stops
SEA22:47Seattle/Tacoma Intl
€633
Lufthansa
5 Sept
SEA19:20Seattle/Tacoma Intl
52h 25m
2 stops
DUB07:45Dublin
15 Sept
DUB09:50Dublin
20h 57m
2 stops
SEA22:47Seattle/Tacoma Intl
€637
Lufthansa
6 Sept
SEA19:20Seattle/Tacoma Intl
28h 25m
2 stops
DUB07:45Dublin
14 Sept
DUB09:20Dublin
17h 12m
2 stops
SEA18:32Seattle/Tacoma Intl
€668

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 19 July 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Mon 3/8

13:30-14:40

1 stop17h 10m

Cork

Wed 19/8

10:50-16:27

1 stop13h 37m

€628
Fastest return journey

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 3/8

15:40-13:15

1 stop13h 35m

Dublin

Sat 22/8

14:15-17:55

1 stop11h 40m

€631

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 28/8

23:25-11:05

1 stop27h 40m

Dublin

Tue 29/9

14:15-20:40

1 stop14h 25m

€632

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 5/9

10:40-07:45

1 stop13h 05m

Dublin

Sun 13/9

05:55-22:47

2 stops24h 52m

€633

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 29/8

15:40-19:50

2 stops20h 10m

Dublin

Tue 15/9

06:30-20:40

2 stops22h 10m

€636

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 5/9

19:20-07:45

2 stops52h 25m

Dublin

Tue 15/9

09:50-22:47

2 stops20h 57m

€637

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/9

07:00-07:20

2 stops16h 20m

Dublin

Tue 8/9

09:20-23:36

2 stops22h 16m

€638

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 11/9

08:40-11:10

2 stops18h 30m

Dublin

Sat 19/9

09:20-19:14

2 stops17h 54m

€639

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Fri 11/9

07:15-10:20

2 stops19h 05m

Cork

Mon 21/9

10:50-16:35

1 stop13h 45m

€716

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Fri 11/9

07:15-10:20

2 stops19h 05m

Cork

Mon 21/9

10:50-16:35

1 stop13h 45m

€717

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of January is another great option to travel to Ireland, with average flight prices from Seattle averaging around €450.

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices

How far in advance should I book a flight from Seattle to Ireland?

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €598 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as €528 on momondo.

What cabin class options are available on Seattle to Ireland flights?

There is only 1 cabin class available to choose from on Seattle to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Ireland flights?

No. A direct flight is the cheapest option for a flight between Seattle to Ireland.

Cheap Seattle to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

Frequently asked questions about flying from Seattle to Ireland

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Ireland?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ireland for you.

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Ireland?

momondo helps you find the best flight between Seattle and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €38
Flights to Corkfrom €89
Flights to Shannon, Clarefrom €82
Flights to Milltown (Kerry)from €37
Flights to Donegalfrom €76